Lindsay had her back pressed against him, their legs tangled, her head sharing the same pillow as Danny, his arm looped over her waist.

Danny pressed a kiss just behind her ear, and then slowly kissed down her neck and across her shoulder. Danny knew the instant she woke up.

"What are you doing?" Lindsay asked.

"If you don't know then I'm doing it wrong."

"Sleep." Lindsay muttered.

"Are you sure?"

"If I don't sleep I'll look tired tomorrow and then Becky will tell Mom and I'll spend the next week on the phone with her while she wants to know why I'm not getting enough sleep."

"Sounds rather dramatic."

"My mother worries." She wriggled out of his grasp and over to the empty side of the bed.

"Where are you going?" Danny asked.

"To sleep."

"Come back here and I'll let you sleep."

"Promise?"

"Promise."

Lindsay moved back into his grasp and closed her eyes.

CSI NY CSI NY

Danny walked into the building and noticed a woman with dark blonde hair stood at the desk with a slightly older man. It took a second but he recognised her.

"Becky Monroe?" He walked over.

"Yes?" The woman turned around.

"Danny Messer, I work with your sister."

"You're the guy who calls her Montana." Becky said recognising the name.

"That would be me. And you're the mathematician."

"Clay wants to know if he should send the defensive line your way." Becky crossed her arms. "I presume you know who he is."

"She mentioned something." Danny stated.

"Becky." The man said.

"Sorry. Danny, this is Professor Matthew Kieln."

"Can I get a couple of visitor passes?" Danny requested. "Rebecca Monroe and Matthew Kieln."

The woman handed them over and made a note of the names.

"I'll take you up."

…

"Wait here." Danny said when they reached the lab where Lindsay was talking to Adam. "Yo Montana." He stepped inside. "Your visitors are here."

"You didn't make a pass at my sister did you?" Lindsay inquired.

"I'm not that stupid." Danny replied.

"Thanks Adam." Lindsay told him and headed outside. "Hey Becky." She gave her sister a hug. "It's good to see you."

"You too Linds. This is Matthew Kieln, he's my thesis advisor. Matt my sister Lindsay."

"It's nice to meet you." Lindsay shook his hand. "You said you knew something about the number."

"Is there somewhere we can talk?" Professor Kieln requested.

"I need to get my boss and the lead detective in on it."

"Try Mac's office." Danny suggested. "I'll find him and Flack and send them over."

"Thanks Danny." Lindsay smiled at him.

"No problem Montana." He winked at her and went to find Mac.

"He's kind of cute." Becky commented.

"Don't tell him that it'll go to his head." Lindsay recommended.

"You like him." Becky stated. "I think we need to have a little chat before I leave."

"How about we deal with why you're here first?" Lindsay suggested as she pushed the door to Mac's office open. "Please take a seat."

It too a few minutes for Mac and Flack to arrive.

"What's this about Lindsay?" Mac inquired.

"Detectives Mac Taylor and Don Flack, this is my sister Becky Monroe and Professor Matthew Kieln of Harvard University."

"It's nice to meet you." Mac said. He looked back to Lindsay for an explanation.

"Why I finally ran out of ideas for that number yesterday, I called Becky to see if the number would mean anything to her. I didn't tell her anything about the case; I just gave her the number." Lindsay explained. "She called me back last night; they know something they couldn't tell me on the phone."

"If it helps any I probably have a higher security clearance than any of you." Matthew stated. "I regularly consult with the NSA, CIA, FBI, and other government agencies."

"I have more limited clearance since I help out on occasion." Becky added.

"What exactly can you tell us about the number?" Mac asked?

TBC